Assume that the U.S. Mint manufactures dollar coins so that

Last updated: 7/8/2022

Assume that the U.S. Mint manufactures dollar coins so that the standard deviation is 0.0390 g. The accompanying list contains weights (grams) of dollar coins manufactured with a new process designed to decrease the standard deviation so that it is less than 0.0390 g. This sample has these summary statistics: n = 16, x=8.065 g, s= 0.02 g. A significance level is used to test the claim that the sample is from a population with a standard deviation less than 0.0390 g. If we want to use a 0.01 significance level and a parametric method to test the claim that the sample is from a population with a standard deviation less than 0.0390 g, what requirements must be satisfied? How does the normality requireme a hypothesis test of a claim about a standard deviation differ from the normality requirement for a hypothesis test of a claim about a mean? Click the icon to view the weights of dollar coins manufactured with the new process. What requirements must be satisfied? Select all that apply. ***** A. The sample size is greater than 30. B. The sample is a simple random sample. C. The population has a chi-square distribution. D. The population has a normal distribution. E. Either or both of these conditions are satisfied: the population is normally distributed or the sample size is greater than 30. OF. No requirements must be satisfied.